Analysis
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max time kernel
151s -
max time network
158s -
platform
windows10-2004_x64 -
resource
win10v2004-20230915-en -
resource tags
arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system -
submitted
11-10-2023 20:13
Static task
static1
Behavioral task
behavioral1
Sample
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe
Resource
win10v2004-20230915-en
General
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Target
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe
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Size
473KB
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MD5
f83fb9ce6a83da58b20685c1d7e1e546
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SHA1
01c459b549c1c2a68208d38d4ba5e36d29212a4f
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SHA256
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684
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SHA512
934ec9073a28b90e8df785bef49f224789da59f83729208b92dba0503e2894b3f48ed04b20de1ba49374b1cd26f0c87e8e5ab79e817258135e3be2c171f3f396
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SSDEEP
12288:v6l/7FpnaeoQbRLBYdunMCayql4YcQD+AgJbAWgjbgpQ:CDna43YAKl4Yci+AggEpQ
Malware Config
Extracted
C:\odt\DECRYPT-FILES.html
Signatures
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Maze
Ransomware family also known as ChaCha.
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Drops startup file 4 IoCs
Processes:
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exedescription ioc Process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\dd8y87rb.dat e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\DECRYPT-FILES.html e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dd8y87rb.dat e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\DECRYPT-FILES.html e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exepid Process 1352 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 1352 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe -
Suspicious use of AdjustPrivilegeToken 45 IoCs
Processes:
wmic.exevssvc.exedescription pid Process Token: SeIncreaseQuotaPrivilege 4644 wmic.exe Token: SeSecurityPrivilege 4644 wmic.exe Token: SeTakeOwnershipPrivilege 4644 wmic.exe Token: SeLoadDriverPrivilege 4644 wmic.exe Token: SeSystemProfilePrivilege 4644 wmic.exe Token: SeSystemtimePrivilege 4644 wmic.exe Token: SeProfSingleProcessPrivilege 4644 wmic.exe Token: SeIncBasePriorityPrivilege 4644 wmic.exe Token: SeCreatePagefilePrivilege 4644 wmic.exe Token: SeBackupPrivilege 4644 wmic.exe Token: SeRestorePrivilege 4644 wmic.exe Token: SeShutdownPrivilege 4644 wmic.exe Token: SeDebugPrivilege 4644 wmic.exe Token: SeSystemEnvironmentPrivilege 4644 wmic.exe Token: SeRemoteShutdownPrivilege 4644 wmic.exe Token: SeUndockPrivilege 4644 wmic.exe Token: SeManageVolumePrivilege 4644 wmic.exe Token: 33 4644 wmic.exe Token: 34 4644 wmic.exe Token: 35 4644 wmic.exe Token: 36 4644 wmic.exe Token: SeIncreaseQuotaPrivilege 4644 wmic.exe Token: SeSecurityPrivilege 4644 wmic.exe Token: SeTakeOwnershipPrivilege 4644 wmic.exe Token: SeLoadDriverPrivilege 4644 wmic.exe Token: SeSystemProfilePrivilege 4644 wmic.exe Token: SeSystemtimePrivilege 4644 wmic.exe Token: SeProfSingleProcessPrivilege 4644 wmic.exe Token: SeIncBasePriorityPrivilege 4644 wmic.exe Token: SeCreatePagefilePrivilege 4644 wmic.exe Token: SeBackupPrivilege 4644 wmic.exe Token: SeRestorePrivilege 4644 wmic.exe Token: SeShutdownPrivilege 4644 wmic.exe Token: SeDebugPrivilege 4644 wmic.exe Token: SeSystemEnvironmentPrivilege 4644 wmic.exe Token: SeRemoteShutdownPrivilege 4644 wmic.exe Token: SeUndockPrivilege 4644 wmic.exe Token: SeManageVolumePrivilege 4644 wmic.exe Token: 33 4644 wmic.exe Token: 34 4644 wmic.exe Token: 35 4644 wmic.exe Token: 36 4644 wmic.exe Token: SeBackupPrivilege 1148 vssvc.exe Token: SeRestorePrivilege 1148 vssvc.exe Token: SeAuditPrivilege 1148 vssvc.exe -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exedescription pid Process procid_target PID 1352 wrote to memory of 4644 1352 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 96 PID 1352 wrote to memory of 4644 1352 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 96 -
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Users\Admin\AppData\Local\Temp\e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe"C:\Users\Admin\AppData\Local\Temp\e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe"1⤵
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1352 -
C:\Windows\system32\wbem\wmic.exe"C:\uxa\vc\..\..\Windows\ykye\ow\..\..\system32\cuiwx\ho\..\..\wbem\j\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:4644
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1148
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
6KB
MD5ba8396d30e9439d0b2116b65e306f19f
SHA18effff1997ef10d6823324a3631cd51076f83873
SHA256cc12b6dba81833c4e07498c052e299288edbcdc17dbc22c9b6ae912f650ac985
SHA512174572d192c92e0410809d48310eafd386ae120a982306326780dbfaf6a55f54fdc07a15bfaeed5d0355ac3c317991d89483349d433fb8f2fff2c850adc5c591